Tie plate



- June 8 1926.

W. S. BOYCE TIE PLATE Filed March 19, 1926 U3 a? WW Patented June 8,1926.

NITED STATES WILLIAM S. BOYCE, CHICAGO, ILLINOIS.

TIE PLATE.

Application filed March 19, 1926 Serial No. 95,823.

as illustrated in reissue'Letters Patent No..

15,989, issued to me and dated January 27th,

The object of the invention is to provide a tie plate of this generaltype, which will be of reduced weight, without impairing its strengthand efiiciency.

In the accompanying drawings Figure l is a plan top view of a plateembodying the present invention.

Figure 2 is a bottom plan view of the same.

Figure 3 is a longitudinal, sectional view of the same, enlarged, thesection being taken in the Vertical plane indicated by the dotted line3-3 on Figure '2.

Figure 4 is a side elevation of a modified form.

Figure 5 is a transverse section of the plate, enlarged, the sectionbeing taken in the vertical plane indicated by the dotted line 55 ofFigure 3.

Figure 6 is a transverse sectional view of the modified form, thesection being taken in the vertical plane indicated by the dotted line66 on Figure 4.

In said drawing, the late is indicated as a whole by the letter andcomprises a top rail bearing surface 1 and a rail abutting shoulderflange 2, which extends transversely across the top of the plate. Therail bearing surface -1 extends from the base of the flange 2 towardsthe other end of the plate, so that one fiange of a rail will be at thebase 3 of the flange 2 and the other at or about the point indicated onFigure 1 by the dotted line 4. The body of the plate is thickest alongthe lines 3 and 4.

On the bottom of the plate and directly below the lines 3 and 4, themetal of the plate extends transversely and forms relatively narrow,initial tie-bearing surfaces 5, each of which is, preferably, providedwith a shallow projection 6 havin a rounded edge. Each end 7 of theplate is recessed or cut away, as indicated at 8, 8, the recessextending from the end to the initial tie bearing surface 5.

Intermediate the initial tie bearing surfaces 5, 5, is a central ormedian recessed area 9, the recess being curved longitudinally and flattransversely, as indicated at 10 and 11, respectively. \Vithin themedian recess are one or more ribs 12 which extend longitudinally of theplate. The surface of the end recesses 8 may be parallel with the planeof. the initial tie bearing surfaces 5, but I prefer to have theminclined upwardly as illustrated.

When the plate is set upon the tie, a slight tap will cause the shallowprojections 6 to initially contact with and enter the surface of the tievery quickly, holding ,it against accidental shifting while the rail isbeing set and the plate is given an initial seating upon the surfaces 5,5. When finally seated, the ultimate tie bearing surfaces will be theend surfaces 8, 8, the surfaces'5, 5, and the arched and flat surfacesof the central or median recesses.

The plate illustrated in Figures 4 and 6 is the same as the plate justdescribed, with the exception that the initial tie bearing area,indicated in Figure 4 by the dotted line 13, is relatively narrower thanthat; shown at 5 in Figure 3, and the shallow projection 14 has apointed edge instead of a rounded edge, as shown on the projection 6.

By taking out a relatively large amount of metal in the central area 9of the plate bottom, by making the bottom surface of this central recesscurved or arched longitudinally at 10 and flat transversely at 11, ofthe plate, and by placing the ribs 12 in this median recess 9, I amenabled to materially lighten the plate without impairing1 its strengthor holding power on the ral I I claim as my invention 1. A tie platehaving its median and its end portions cut away and separated byrelatively narrow, tie bearing surfaces to initially seat on the tie,the bottom of the median cut away portion being arched longitudinallyand being flat transversely of the plate,

2. A tie plate having its median and its end portions cut away andseparated by relatively narrow, tie bearing surfaces to initially seaton the tie, the bottom of the median cut away portion being archedlongitudinally and being fiat transversely of the plate, and alongitudinally extending rib in the median cut away portion.

3. A tie plate having its median and its end portions cut away andseparated by relatively narrow, tie bearing surfaces to initially seaton the tie, the bottom of the median cut away portion being archedlongitudinally and being fiat transversely of the plate, and a pluralityof spaced apart ribs extending longitudinally in the central portionbetween the initial tie bearing surfaces.

4. A tie plate provided on its top with a rail bearing surface, andprovided on its bottom with a recessed, median portion having a fiatbottom surface extending from side to side of the plate and with alongitudinally extending rib depending from the recessed bottom.

5. A tie plate provided on its top with a rail bearing surface andprovided on its bottom with end and median recessed areas extendingtransversely of the plate, ribs inthe median recess extendinglongitudinally of 4 the plate, the surface of the median recessintermediate the ribs being flat, and the body I of the plate being ofincreased thickness under the margins of the rail bearing surface.

' 6. A tie plate provided on its top with a rail bearing surface, and onits bottom with a recessed portion below said rail bearing-surface, thebottom of the recess being arched longitudinally and flat transverselyof the plate.

7. A tie plate provided on'its top with a rail bearing surface, and onits bottom with a recessed portion below said rail bearing flange and arail bearing surfaceextending from said flange towards the other end ofthe plate, and having on its bottom a median recessed portion directlybelow the rail bearing top surface, a recessed portion locatedtransversely of the plate and extending from each end thereof inwardlytowards the me-,

dian recess, a relatively narrow, transversely extending, initialtie-bearing surface separating the median recess from each end recess,the body of the plate being of increased thickness through said initialtie-bearing surfaces, the surface of the median recess being archedlongitudinally and flat transversely of the plate, and a plurality ofribs in said recess extending longitudinally of the plate between theinitial tie bearing surfaces.

In testimony thatI claim the foregoing as m invention I aflix m sinature this y a 7 17th day of March, 1926..

WILLIAM S.' BOYCEJ

